VCMS/AV Detector Optimized for ADI SHARC v3.0
The Verance Copy Management System for Audiovisual Content (VCMS/AV) employs proprietary audio watermarking techniques to enable the communication and enactment of use policies for audiovisual content across a broad range of distribution channels and devices. VCMS/AV has been adopted as a component of the AACS content protection system and inclusion of the VCMS/AV Detector will be required for all Blu-ray players starting in late 2008.
To facilitate Blu-ray component and player manufacturers with the successful and timely integration of VCMS/AV technology with their products, Verance is offering a line of ready-to-use object-code libraries (“Verance Finished Detectors”) that implement the VCMS/AV Detector technology. Verance Finished Detectors have been certified by Verance to comply with the requirements of the VCMS/AV Detector specifications. There is no need for additional detector compliance validation or optimization, no source code to maintain and protect, and no requirement for specialized watermark technology or digital signal processing (DSP) expertise. Software robustness (i.e., tamper resistance) technology is not included, and must be applied to products including Finished Detectors prior to sale.
The VCMS/AV Detector Optimized for ADI SHARC is an object-code module compatible with Analog Devices' ADSP-2126x and ADSP-2136x families of programmable Digital Signal Processors. It provides a highly optimized solution that can be easily integrated with other system functions, allowing consumer product developers to reduce product costs, minimize engineering efforts, and reduce time-to-market.
Features
- Optimized for use with ADI SHARC ADSP 2126x and 2136x DSPs
- Certified as compliant with the VCMS/AV Specifications
- ANSI C Application Programming Interface (API) for ease of integration
- Includes relocatable object-code, API header files, and sample programs
Audio Formats
- Sampling Rates:
- 12 kHz, 24 kHz, 48 kHz, 96 kHz, 192 kHz
- 11.025 kHz, 22.05 kHz, 44.1 kHz, 88.2 kHz, 176.4 kHz
- 8kHz, 16 kHz, 32 kHz, 64 kHz
- Sample Format: Single-precision floating point
- Audio Channels: Up to 8 channels of audio at any supported sampling rate
System Requirements
- ADI SHARC 2126x or 2136x processor
- Compatible with ADI VisualDSP++ 4.5
Specifications
- Full compatibility with:
- VCMS/AV System Specification v1.0
- AACS Interim License Agreement Compliance Rules
Processing Requirements
- Memory Usage
- Program Memory: 53 KB (pmco)
- Static Data Memory: 16 KB (dmda)
- Dynamic Memory: 40 KB (heap)
CPU Utilization — Worst Case*
| Sample Rate (Max) |
Audio Channels (Max) | Average MHz (Max) | Peak MHz |
| 44.1 KHz | 8 | 11.6 | 24.1 |
| 48 KHz | 8 | 11.1 | 25.0 |
| 88.2 KHz | 6 | 12.5 | 25.1 |
| 96 KHz | 6 | 12.1 | 25.1 |
| 176.4 KHz | 2 | 13.2 | 22.5 |
| 192 KHz | 2 | 12.9 | 21.5 |
| *Benchmarks achieved using cooperative timer-based peak limiting on the Analog Devices ADSP-21262 EZ Kit. | |||

